/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/GroupTopology.h
FGroupis a set of connected triangles with the same GroupID
struct FGroup
TArray<FGroupB...
Boundaries
List of boundaries of this group (may be empty, eg on a closed component with only one group)
int
GroupID
GroupID for this group
TArray< int >
NeighbourGroupIDs
List of groups that are adjacent to this group
TArray< int >
Triangles
List of triangles forming this group